build: separate compiler and libs

cl/_testrt/cvar/in.go

@@ -1,19 +0,0 @@
-package main
-
-import _ "unsafe"
-
-//go:linkname barX _bar_x
-var barX struct {
-	Arr       [16]int8
-	Callbacks [2]func()
-}
-
-//go:linkname barY _bar_y
-var barY struct {
-	Arr [16]int8
-}
-
-func main() {
-	_ = barX
-	_ = barY
-}